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ClinicalTrials.gov 2 recruiting now official registry

SARS-CoV-2 clinical trials

Every US clinical trial registered for SARS-CoV-2 — phase mix, recruiting status, and the sponsors running them, straight from the NIH ClinicalTrials.gov registry.

18 US clinical trials · 2 currently recruiting

The research picture

SARS-CoV-2 has 18 registered US clinical trials, 2 of them open to new participants right now — about 11% of the total.

2
recruiting participants now
11%
of trials open to enrollment
6
in Phase 3–4 (later-stage)
5
top sponsor: ModernaTX

Counts reflect the public ClinicalTrials.gov registry as last mirrored by PlainTrial. Status and phase are reported by each study's sponsor. This is reference information, not medical advice.

Active & Recent Trials

RECRUITING Phase 4 30,000 participants

A Study to Evaluate the Efficacy and Safety of mRNA-1283 and mRNA-1273 in Participants 50 to 64 Years of Age Without High-Risk Conditions for Severe Coronavirus Disease 2019 (COVID-19)

ModernaTX

NCT07266558

RECRUITING Phase 4 1,094 participants

A Study to Investigate the Immunogenicity and Safety of mRNA COVID-19 Variant-containing Vaccine Formulations

ModernaTX

NCT06585241

ACTIVE NOT RECRUITING 1 participants

Use and Effectiveness of COVID-19 Vaccines Using State Vaccine Registries and Insurance Claims Data

Pfizer

NCT05876377

COMPLETED Phase 3 32,450 participants

Phase III Double-blind, Placebo-controlled Study of AZD1222 for the Prevention of COVID-19 in Adults

AstraZeneca

NCT04516746

COMPLETED Phase 3 30,415 participants

A Study to Evaluate Efficacy, Safety, and Immunogenicity of mRNA-1273 Vaccine in Adults Aged 18 Years and Older to Prevent COVID-19

ModernaTX

NCT04470427

COMPLETED 2,824 participants

Epidemiology, Immunology and Clinical Characteristics of COVID-19 (EPIC3)

VA Office of Research and Development

NCT05764083

COMPLETED Phase 1 1,758 participants

A Study of mRNA-based Influenza and SARS-CoV-2 (COVID-19) Multi-component Vaccines in Healthy Adults

ModernaTX

NCT05827926

COMPLETED Phase 3 593 participants

Inpatient Treatment of COVID-19 With Anti-Coronavirus Immunoglobulin (ITAC)

University of Minnesota

NCT04546581

COMPLETED 472 participants

Monitoring Serologic Response to Severe Acute Respiratory Syndrome-2 (SARS-COV-2)/COVID-19 in Children

Connecticut Children's Medical Center

NCT04838834

COMPLETED 412 participants

COVID-19 in Patients With HIV

University of Missouri-Columbia

NCT04333953

COMPLETED 372 participants

Asymptomatic SARS-CoV-2 Detection in Children

University of Calgary

NCT04853316

COMPLETED Phase 3 234 participants

A Study to Evaluate Safety and Immunogenicity of mRNA-1273 Vaccine to Prevent COVID-19 in Adult Organ Transplant Recipients and in Healthy Adult Participants

ModernaTX

NCT04860297

COMPLETED 205 participants

Comparison of EPM-IX to Currently Used Specimen Transportation and Extraction Devices ( CGI-EPM-IX )

Convergent Genomics

NCT05281692

COMPLETED 140 participants

Clinical Evaluation of a Point-of-Care (POC), COVID-19 Rapid Antigen Test (CoviDx™)

Lumos Diagnostics

NCT04750629

COMPLETED 129 participants

Assessment of Exam Findings in Coronavirus Disease 2019 (COVID-19) With Point-of-Care Ultrasonography (POCUS)

University of Minnesota

NCT04339998

COMPLETED NA 129 participants

NOWDx Test for the Detection of Antibodies to COVID-19

NOWDiagnostics

NCT04690413

COMPLETED Phase 1 99 participants

Safety, Reactogenicity, and Immunogenicity Trial of CV2CoV mRNA Vaccine Against SARS-CoV-2 in Seropositive Adult Participants

GlaxoSmithKline

NCT05260437

COMPLETED Phase 1 35 participants

A Live Recombinant Newcastle Disease Virus-vectored COVID-19 Vaccine Phase 1 Study.

Sean Liu

NCT05181709

Phase Distribution

PhaseTrial count
Phase 1 3
Phase 3 4
Phase 4 2

Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.

Reading the SARS-CoV-2 Trial Landscape

ClinicalTrials.gov lists 18 US studies indexed under SARS-CoV-2, and 2 of those are currently open to recruitment — roughly 11% of the total volume on the registry. That ratio is a useful proxy for activity level: a high share of recruiting studies often signals that research interest is current and that new enrollment opportunities are appearing, while a low share typically means the field is dominated by completed or follow-up work where most participant spots have already been filled. These counts reflect the public registry only and include studies at every stage of design, so they should be read as an index of research attention rather than as a measure of treatment availability.

The phase distribution for SARS-CoV-2 shows 6 late-stage studies (Phase 3 and Phase 4 combined) alongside 3 earlier-phase entries (Phase 1 through Phase 2). Phase 1 and Phase 2 studies focus on early safety signals, dosing, and preliminary effect, while Phase 3 studies are typically the larger efficacy and safety trials submitted toward regulatory review, and Phase 4 studies follow approved interventions in real-world use. A condition weighted toward later phases often reflects a mature research pipeline with several interventions already close to or past approval, whereas a heavier early-phase tilt suggests the field is still exploring new mechanisms and candidate approaches.

Top sponsor activity for SARS-CoV-2 is led by ModernaTX with 5 indexed trials, alongside 9 other organizations in the top contributor list. The list on this page surfaces up to 18 of the most relevant recent and active entries, ordered with recruiting studies first so practical options are visible. All figures are derived from the public ClinicalTrials.gov dataset maintained by the National Library of Medicine and are reproduced here for reference. Inclusion of a trial, sponsor, or intervention on this page is neither an endorsement nor a recommendation — eligibility, protocol changes, and site-level status can shift frequently, so always verify current details on ClinicalTrials.gov and consult a qualified healthcare provider before acting on anything you see here.

Frequently Asked Questions

How many clinical trials are there for SARS-CoV-2?

PlainTrial tracks 18 US clinical trials for SARS-CoV-2, of which 2 are currently recruiting participants. Data sourced from ClinicalTrials.gov.

How do I find a recruiting trial for SARS-CoV-2?

Use the trial list above filtered by "Recruiting" status, or visit our trial finder at /recruiting to search by condition and state. Always discuss trial participation with your healthcare provider before enrolling.

Is this data current?

Data is sourced from ClinicalTrials.gov and reflects our most recent data pull. Trial status may have changed since then. Always verify current information at ClinicalTrials.gov before making decisions about participation.

Related

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from ClinicalTrials.gov (National Library of Medicine). Consult a qualified professional before making decisions based on this data.

Source: ClinicalTrials.gov (NIH/NLM) ClinicalTrials.gov AACT registry · 2026 Trial counts and statuses sourced from ClinicalTrials.gov. Sponsor counts include both industry and federal/academic sponsors.

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